2015 Event NASA's Mars Reconnaissance Orbiter detects liquid water on Mars in the form of hydrated salts; the minerals are found along flow lines on steep slopes and tend to appear during 'warm' weather (above 10 degrees F , -23 degrees C) 2013 Event Kepler-62e and Kepler-62f, two planets resembling planet Earth are discovered revolving around the star Kepler-62 in the habitable zone, an area around the stars whose atmospheric pressure can suport liquid water at the surface 1986 Event STS-61-C scrubbed at T-31sec because of liquid oxygen valve problem 1984 Event Liquid gas tank in Mexico City explodes; 334 die 1978 Event Auto with liquid gas crashes and explodes in Spain, 160 killed 1967 Event Liquid gas tanker explodes in Martelange Belgium, 22 killed 1955 Event 1st sub powered by liquid metal cooled reactor launched-Seawolf 1939 Event Test flight of 1st rocket plane using liquid propellants 1933 Event 1st Soviet liquid fuel rocket attains altitude of 261' (80m) 1926 Event Robert Goddard launches 1st liquid fuel rocket, goes 184' (56 meters) 1908 Event H Kamerlingh Onnes makes helium liquid (-269 degrees C) 1853 Birthday Heike Kamerlingh Onnes, Dutch physicist, liquid helium, Nobel 1913 1837 Birthday John van der Waals, Hol, physicist, Nobel 1910, Liquid and Gas States
